Tinfoil hats have traditionally been the preferred armor for protecting noggins from electromagnetic waves and radiation, but also can be a bit of a fashion faux pas.

Shield Apparel created a Kickstarter campaign to help people protect their brain waves from Big Brother and look cool while doing it with their “Signal Proof Headwear.”

The pitch is in such high demand that the early bird offer for one “signal proof hat” for about $24 is already sold out.

The London-based headwear comes as either beanies or baseball caps, and promise to block out signals from phones, WiFi, microwaves, TV signals and satellites.

The company claims to use pure silver as a fabric to block out what they call “electromagnetic smog,” which is placed between the hat’s layers.

The apparel was inspired by a family member who complained that he could not fall asleep and blamed it on wireless signals, according to the Kickstarter.

“We are not saying that it protects 100% against all kinds of electromagnetic waves that are bad for your health,” the group said. “What we are saying is that if you care about yourself, be smart and put on this first signal proof apparel instead of the usual one — no one will spot it and it will protect you.”

The signal helmets are certainly more inconspicuous than their tinfoil counterparts, and come in all sizes, from newborn infants to adults.

The company described their signal-blocking hats as one of "the most comfortable and functional headwear you have ever worn," and claimed it was invisible to radar and infra-red, in case any government agencies were tracking you.

“Shield offers the right headwear suitable for every situation,” they advertised. “You do not have to be paranoid or into conspiracy theories.”

The start-up claims the hat is better than the tin foil hat, using “actual situation and studies” to develop the headwear, and is also “more beautiful and comfortable” than tin foil.

On Sunday morning, the campaign raised $15,327 with 197 backers, and has ten more days to reach its goal at $19,268.